Method of producing a filled bobbin.



G. A. HAMMOND-KNOWLTON.

METHOD OF PRODUCING A FILLED BOBBIN.

APPLICATION IILEjD NOV. 25, 1912.

1,129,669. Patented Feb. 23, 1915.

WITNESSES Y I/VVE/VTOR (I M ATTORNEYS .IINITE TATE PATENT FFICE.

CLARENCE A. HAMMOND-KNOWLTON, OF NEW YORK, N. Y.

METHOD OF PRODUCING A FILLED BOBIBIN.

To all whom it may concern.

Be it known that I, CLARENCE A. HAM- MoND-KNowL'roN, a. citizen of the. United States, and a resident of'the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Method of Producing a Filled. Bobbin, of which the following is a full, clear, and exact descrip tion.

This invention relates to an improved method of producing filled bobbins, and has for an object to provide improved steps for assembling successively the parts of a bobbin so as to result in a properly filled bobbin ready foruse.

Another object of the invention is to provide a bobbin with a metallic eyelet and a pair of end members formed of paper, fiber, or other similar material.

A further object of the invention is the method of producing a bobbin by winding the thread on the tube, eyelet, or the like, placing end members thereon, and then com pressing the thread and end members while turning over or riveting the eyelet or similar structure.

In carrying out the objects of the invention, it is aimed to produce a bobbin of such a character and sufiiciently cheap to be utilized once and then discarded. To this end a tubular member or shaft construction is provided, upon which is wound a supply of thread, and then a pair of end members are placed on the tubular or similar structure. After the end members have been arranged in'position, the same, together with the thread, are compressed and the tubular or similar structure is turned over or burred on the end so as to hold the end members properly in place. If desired, the shaft or tubular structure could have a turned over portion or burr on one end-provided thereon before the thread is wound. Also, if desired, an end of paper or othermaterial could be placed on the eyelet having a burred end and then the thread could be wound on the eyelet, after which a second end of paper or other material could be placed in position and compressed, the eyelet being turned over for finally clamping the ends against longitudinal movement.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification in Specification of Letters Patent.

Patented Feb. 23, 1915.

Application filed November'25, 1912. Serial No. 733,338,

which similar characters of reference 'indi cate corresponding parts in all the views.

Figure 1 is a perspective view of an eyelet structure embodying certain features of the invention; Fig. 2 is a perspective view of an end structure designed to be used in connection with the eyelet shown in Fig. 1;

Fig. 3 shows a bobbin partially completed with a winding of th-readthereon, Fig. a shows the next step in forming the bobbin to that shown in Fig. 3; Fig. 5 shows the complete bobbin. Referring to the accompanying drawings by numerals, 1 indicates an eyelet structure having a tubular portion 2, and a flange or turned up portion 3 at one end. An end member l, designed to be threaded over the tubular portion 2 so as to rest against end 3, is provided. Afterend member 4:, has been placed in position the same, together with member 1, is put in the machine and thread 5 is wound on the eyelet structure 1. This way of providing a filled bobbin may be used with any kind of thread, but is of considerable advantage when used with silk thread, as the same tends to expand or move apart and become tangled, by reason of the nature of the thread. In order to hold the thread properly in position, the same must be maintained under a suflicient pressure or tension. In order to accomplish this, the thread is wound, as just described, with the usual tension and then a second end 6 is placed over the end of the tubular portion 2, as shown in Fig. 4. After this has been done the bobbin is then placed in a riveting machine which is provided with means for pressing against end 6 so as to force the riveting machine turns over the end of tube 2 and forms a flange 7 for holding end 2 in place and consequently causes the thread to be maintained under pressure. It will be noted that end 4 is provided with an aperture 8 through which the end of the thread is passed preparatory to winding the thread on the tube 2. It will also be noted that end 4 is provided with a slot 9 for receiving the outer end of the thread after the same has been wound, as shown in Fig. 3.

In forming a. bobbin it will be evident that not only may the same be formed as de- I scribed, but various slight changes in the method of forming the bobbin may be utilized without departing from the spirit of the invention. It is intended that the bobbin should be -made of such a size as to snugly fit the shuttle for which it is intended, and to provide a certain amount of friction, whereby the thread being unwound will have a certain tension exerted thereon.

If desired, the. edges or periphery of the end members could be turned over somewhat in order to provide a greater bearing surface for causing a frictional resistance to the rotation of the bobbin.

In constructing the bobbin, various ma' *tefials may be used, but metal eyelets or tubes must be used as the central part, or

- some material which would act in substantially the same way. The ends 4: and 6 may be made of fiber, paper, or other similar material, but preferably made from paper or cardboard, as the same is comparatively cheap and provides ample means for holding the thread in place and ample resilient ters Patent 1. A method of producing a filled bobbin, comprising the production of a hollow core member carrying a single end, winding thread on said core member, placing a second end on said core member, pressing said second mentioned end toward the first mentioned end for compressing said thread, and then turning over said core member for preventing a reverse movement of said second end.

2. A method of producing a filled bobbin, comprising the winding of thread on a bobbin having one end, placing a second end loosely on said bobbin, pressing said second end toward the first mentioned end in order to compress said thread and then turning over the core of the bobbin on saidsecond end.

' In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CLARENCE A. HAMMOND-KNOWLTON.

Witnesses:

F. -W. SHAW, C. C; KNOWLTON. 

